updated by @femonique: 07/06/17 04:10:01PM
Your examples sound more like precognition that you manifest as physical symptoms. Although a medical intuitive can have precognition as in sensing the beginnings of a disease before it physically manifests, usually, they are scanning the body for problems that already exist. Some are also healers, but many work just as medical intuitives. i have a friend who has been a medical intuitive for many years, she's like a CAT-scan with legs. she can see into a person's body and also suggest various remedies be they traditional or holistic. She's also a psychic and deals with other issues but she loves all things medical, that's where she shines.
There's been this attitude that if you have a gift, you are REQUIRED to do something with it; and that is changing. A gift is a gift; we are not in service to it. If you have an interest in learning about the physical body and all things health, medical; than becoming a medical intuitive might be the right choice, but only if you enjoy it. When we really love what we do, we are in service to the Universe.
In my opinion, one of the reasons for the problems with your family is that because this is precognition, the symptoms haven't physically manifested. They haven't even formulated the question that something is wrong or has the potential for being wrong. It would look different if they already had the pain and then asked you for your opinion of what was wrong. The other thing is that even though they are family, it doesn't mean they understand your abilities.
I have rarely met anyone in the field of psychic/healing etc who has been supported by others. It is a lonely path. The friend I mentioned, is well known and often consulted by doctors; however, in public gatherings or parties, they avoid her and pretend that they don't know her. One of the great healers Rosalyn Bruyere said "no one wants to wake up and realize they're a weirdo."
There is also the issue of getting paid for healing services. This is probably the worst sticking point that all healers face. I have heard many people complain about healers wanting to be paid. This stems from the idea that the gift is unique and from God - all gifts are from God, and all honorable work should be treated the same. There is also the whole issue of energy exchange; if you ask for a service, you need to reimburse. There is also the practical side, if healers aren't suppose to be paid, what do they do to pay the bills? Most work other jobs which limits their time to help others.
My friend never had formal medical training, she just stumbled into it. Same is true for the well known medical intuitive, Caroline Myss - I think she was a book editor(?) and just discovered she had this ability.
There is a book called Become a Medical Intuitive by Tina Zion. It's a great book to read, even if you're not interested in medical intuition, it's a great read about energy, it might provide some answers to your questions.
It sounds to me that perhaps you are an awakening medium and you are getting your information being passed to you from the relatives of those that have already passed over. What other abilities do you have? Do you have any spirit type contacts that could be related to this? Just a thought!
Well, it still sounds to me like you are starting to experience some Mediumistic abilities, but time will tell. As for the flashing, make sure that there isn't a medical reason for this occurring. I have Multiple Sclerosis and get flashing in my eyes from time to time, and there are many other medical reasons that can cause flashing as well! Just a thought!